| From 96412158397ca0e41db1eb7cec4f51a2280d1bf1 Mon Sep 17 00:00:00 2001 |
| From: Mihai Serban <mihai.serban@nxp.com> |
| Date: Thu, 27 Apr 2017 18:47:42 +0300 |
| Subject: [PATCH] MLK-14935: ASoC: fsl_sai: Fix mixing initialization data with |
| actual audio samples |
| |
| When starting a playback the initialization data used to reduce underruns |
| was send to the transmit data register after the DMA requests were enabled. |
| This patch moves the initialization phase before enabling the DMA so the |
| data is transmitted in correct order. |
| |
| Signed-off-by: Mihai Serban <mihai.serban@nxp.com> |
| --- |
| sound/soc/fsl/fsl_sai.c | 5 ++--- |
| 1 file changed, 2 insertions(+), 3 deletions(-) |
| |
| --- a/sound/soc/fsl/fsl_sai.c |
| +++ b/sound/soc/fsl/fsl_sai.c |
| @@ -595,15 +595,14 @@ static int fsl_sai_trigger(struct snd_pc |
| case SNDRV_PCM_TRIGGER_START: |
| case SNDRV_PCM_TRIGGER_RESUME: |
| case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
| - regmap_update_bits(sai->regmap, FSL_SAI_xCSR(tx), |
| - FSL_SAI_CSR_FRDE, FSL_SAI_CSR_FRDE); |
| - |
| for (i = 0; tx && i < channels; i++) |
| regmap_write(sai->regmap, FSL_SAI_TDR0, 0x0); |
| if (tx) |
| udelay(10); |
| |
| regmap_update_bits(sai->regmap, FSL_SAI_xCSR(tx), |
| + FSL_SAI_CSR_FRDE, FSL_SAI_CSR_FRDE); |
| + regmap_update_bits(sai->regmap, FSL_SAI_xCSR(tx), |
| FSL_SAI_CSR_TERE, FSL_SAI_CSR_TERE); |
| regmap_update_bits(sai->regmap, FSL_SAI_xCSR(tx), |
| FSL_SAI_CSR_SE, FSL_SAI_CSR_SE); |